AC coupling: through capacitive coupling separated directly, eliminating the DC component.
交流耦合: 就是通过隔直电容耦合, 去掉了直流分量.
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On the other hand, parameters influencing capacitive - coupling are retained in modeling the system via equivalent circuit.
另一方面, 在采用等效电路建立模型时包含了影响容性耦合的参量.
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